Question

simplify 3x(4x-5)+3 and find it's value for x=3​

Answer 1

Step-by-step explanation:

like this hope it will help you

Answer 2

Answer:

$\qquad\sf{:}\longrightarrow 3x(4x-5)+3$

$\qquad\sf{:}\longrightarrow 12x^2-15x+3$

$\qquad\sf{:}\longrightarrow 12(3)^2-15(3)+3$

$\qquad\sf{:}\longrightarrow 12×9-45+3$

$\qquad\sf{:}\longrightarrow 108-42$

$\qquad\sf{:}\longrightarrow 66$